Matsya Purana — Saptamī Sacred Bath and the Mṛtavatsābhiṣeka Rite for Pacifying Misfortune an...
ततः शुक्लाम्बरधरा कुमारपतिसंयुता सप्तकं पूजयेद्भक्त्या स्त्रीणामथ गुरुं पुनः //
tataḥ śuklāmbaradharā kumārapatisaṃyutā saptakaṃ pūjayedbhaktyā strīṇāmatha guruṃ punaḥ //
Then, wearing white garments and accompanied by her husband, a woman should devoutly worship the sevenfold group (saptaka); thereafter, she should again worship the preceptor (guru) of women.
This verse does not address pralaya; it is a ritual injunction focused on purity (white garments) and devotional worship within a vow/puja context.
It supports householder-dharma by prescribing orderly domestic worship: observing ritual purity, performing prescribed devotions, and honoring the guru—key pillars of ethical and religious life in Purāṇic practice.
The significance is ritual rather than architectural: it specifies dress (white clothing), the presence of the husband in the rite, worship of a ‘saptaka’ (sevenfold set), and concluding reverence to the guru—elements that structure a formal puja procedure.